MEEA Members Member Since Ameren Illinois 2010 American Council for an Energy-Efficient Economy (ACEEE) 2000 Argonne National Laboratory 2011 Cadmus 2004 Calico Energy 2020 Cascade Energy 2017 CenterPoint Energy 2004 CLEAResult 2013 CMC Energy Services 2018 Combined Heat and Power Alliance 2014 ComEd 2000 DNV 2005 Duke Energy 2006 E Source 2010 Edison Foundation Institute for Electric Innovation 2009 Energy Education Council 2007 Erthe Energy Solutions 2018 Franklin Energy 2008 Future Energy Enterprises, LLC 2009 Geothermal Alliance of Illinois 2011 Geothermal Exchange Organization (GEO) 2023 GTI Energy 2017 Guidehouse 2003 ICF 2000 Illinois EPA 2017 Leidos 2010 Mid-West Energy Research Consortium (M-WERC) 2015 MidAmerican Energy Company 2006 Mulder Consulting, LLC 2021 Nicor Gas 2012 Opinion Dynamics 2008 Peoples Gas 2010 Power TakeOff, Inc. 2017 Resource Innovation Institute 2019 SEMCO ENERGY Gas Company 2014 Trane Technologies 2017 TRC 2009 Utilivate Technologies, LLC 2020 VEIC 2015 Village of Oak Park 2018 Waypoint 2017 Willdan 2001